CR Archive | Re: A shoe manufacturer developed a man-made material that looked

A shoe manufacturer developed a man-made material that looked and felt just like natural leather. Over the course of a year, the manufacturer made its entire shoe line in both natural leather and man-made leather. During the year when both lines were sold, the man-made leather shoes outsold the natural leather shoes. The shoe manufacturer concluded that its customers prefer man-made leather to natural leather.

Which of the following statements, if true, casts doubt on the manufacturer's conclusion?

Shoe